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After the sheriff is pressured to find the killer who murdered an air marshal by means of a car bomb, he, in turn, pressures Grissom, Catherine, and Nick for results. Meanwhile, Warrick and Sara work to find out who murdered the wife of a high-profile Las Vegas performer.
Catherine: In fifth grade, I built one of these as my science fair project. It was awesome. First place should've been mine. But they ended up giving it to this kid with some lame red ant colony.
(Gil smirks at the thought as if he's remembering something, too. Catherine glances at Gil, barely catches a glimpse of the smirk and does a double take.)
Catherine: (accusing) That was you.
Gil: Yeah, only my ants were Black Argentinians.
Gil: I learned at a very early age that the bugs always win.